303.5 running warm
Dealer price made me look around, but I am still trying to prove what actually failed. I've got a water pumpsitting in a FridayParts cart for now, not ordered. I check the thermostat, cap, and radiator flow. My 303.5 is running warmer under sustained digging but stays below the red. The radiator is clean, coolant level is stable, and the water-pump weep hole is dry. The upper hose gets hot while the lower hose stays much cooler than I expected, though I know some temperature drop across the radiator is normal. I don't have a flow number yet, just hose temps and what I can see externally. Before I order a pump, I am going to verify the thermostatopening temperature and check radiator flow. Is an infrared temperature spread across the core useful on these, or should I start with a pressure test and cap test?